CVE-2026-73612

File Browser before v2.63.22 fails to validate access rules for descendants during recursive copy, rename, and delete operations, allowing authenticated users to bypass path-based access controls. Attackers can copy, rename, or delete denied files by operating on their allowed parent directory, defeating rule-based isolation for confidentiality and integrity.

Score

CVSS 4.0 8.6 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-08-13

Last modified

2026-08-14

Weaknesses

CWE-639

Affected products

• Filebrowser (Filebrowser)

References

• https://github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-77x8-73f4-5485
• https://www.vulncheck.com/advisories/file-browser-before-authorization-bypass-via-recursive-operations